Corkscrew



FIG. 1 is a front perspective view of the “corkscrew”, showing my new design;

FIG. 2 is a right side view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is a plan view thereof, taken from above; and,

FIG. 7 is a plan view thereof, taken from below. 

The ornamental design for a “corkscrew,” as shown and described. 